I been using those Vibram five fingers “shoes” since last April. You have to get used to them, take at least 2 month just walking in them getting your bones and ligaments used to actually being used.
Once you are used to them they rock, it actually is really fun to run in them since you can feel what you are stepping on and with time you learn adjust so you can run on stones, gravel, cross country etc. I went hiking in the mountains in them and it worked qute well. Big advantage is that your balance is improved a lot since human foot is really good at adjusting weight distibution depending on survace you are on
Doesn't Vibram pierce easily?